Harper became the youngest player with two Opening Day homers, coming in his first two at-bats on April 1 against Miami, and Strasburg allowed three hits over seven shutout innings that day. The Nationals have listed an array of other Opening Day game-used items, including the jersey worn by manager Davey Johnson, who is retiring after this season.

In the first Interleague Opening Day game in history, the Angels won at Cincinnati, 3-1, in 13 innings. Chris Iannetta caught the entire game for the Halos, hit a solo homer in the third inning and then produced the game-winning two-run single. Bidding is under way on a ball that Reds starter Johnny Cueto threw him in the seventh inning.

The Rays' auction is loaded with player jerseys and game-used bases, and included is the No. 18 jersey that Ben Zobrist wore in homering against the Orioles on Opening Day.

Matt Wieters homered for Baltimore in his first at-bat of the season against Price, and Adam Jones doubled twice in that same opener. Both players' clubhouse name plates are available, and they include the Opening Day logo.

Rockies shortstop Troy Tulowitzki singled in his first at-bat of the year, and you can bid on a ball that was tossed out during that at-bat when Brewers starter Yovani Gallardo threw the first two pitches to him in the dirt. Look for the Opening Day logo.

A ball Yu Darvish pitched to Jim Thome in the top of the second inning of the American League Wild Card Game between the Rangers and Orioles last Oct. 5. Thome lined out to second on this pitch. The ball features the postseason logo.

The Ernie Banks banner that hung at the Wrigley Field concourse last season. It is about 95 inches long by 54 inches wide. There are many other Wrigley concourse banners, including one for Jeff Samardzija.